Owner’s manual, Envelope mode – Peterson Sonuus Wahoo User Manual

Page 22

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© Copyright 2012 Sonuus Limited

Wahoo

Owner’s Manual

(

PEd), where the extremes of the footpedal position have bpm values bP.h and bP.L; or the clock can

be sycn’d (

Syn) to external

MIDI

clock.

The tempo is in beats per minute, bpm. The sub-parameters

bPM, bP.h and bP.L have a range

between 10 and 999. To achieve slower and faster tempos, the

div sub-parameter multiplies the

value of the tempo set by the

tyP clock source. As an example, if filter 1 tyP is tPo, bPM is 120bpm

and

div is 2, and filter 2 tyP is -F1 and div is

1

/

2

, then filter 1 has tempo of 240bpm and filter 2 has

tempo equal to

1

/

2

of 120,

i.e.,

60bpm.

If filter 2 is sync’d to filter 1 (

tyP is -F1), then the PhA parameter is used to control the phase offset

between the filters.

PhA set to 0 means that the filters are in-phase; PhA set to 32 means that the

filters are out-of-phase, and settings in-between give degrees of out-of-phaseness. The figure below
shows a sinusoid and two examples of different values of the phase offset,

PhA.

Envelope mode

In envelope tracking mode, the following sub-parameters are used:

In envelope tracking mode, the filter cutoff control follows the signal level. The cutoff control
increases and decreases as the signal becomes louder and quieter.

SEn, the sensitivity sub-

parameter, controls how sensitively the filter follows the signal envelope—a high value means that
the filter will move easily with gently playing; a low value means that you will have to play hard to get
the filter to move much.

Att and dEC control how quickly the follower reacts to an increase and

decrease in signal loudness, respectively.

Envelope

sub-

parameter

Range

Description

SEn

0–999

Sensitivity: how sensitively the filter follows the envelope.

Att

0–200

Attack: how quickly the filter follows an increase in signal.

dEC

0–200

Decay: how quickly the filter follows a decrease in signal.

Filter 1, sinusoid
Filter 2, pha = 16
Filter 2, pha = 32

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